Quiz: Direction:
Do the following tasks. illustrate a rectangle whose sides are (x + 9) cm and (x-9).
A. Find the area of the rectangle.
B. Give all possible x values for the rectangle to exist.
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Quiz: Direction:
Do the following tasks. illustrate a rectangle whose sides are (x + 9) cm and (x-9).
A. Find the area of the rectangle.
B. Give all possible x values for the rectangle to exist.
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Answer:
(x+9)(x+9)
Area= l×w
A. Area= (x+9)(x-9)
= x²-9x+9x-81
Area = x²-81
B. (x+9)(x-9)
x+9=0
x= -9
x-9=0
x= 9
values of x x= 9; x= -9